If you wish to point a domain address that you have to a different domain address or subdomain, the best way to do that would be to use a CNAME record. By creating such a record, the domain being forwarded loses all its records (A, MX, and so on) and instead, it takes the A record of the domain it's forwarded to. By doing this, if you are using a web design service by some company that gives you a subdomain, you can use an actual domain name and not only will it be directed to the Internet site you have set up, but it'll also be displayed in the Internet browser address bar at all times. Some other possible uses of a CNAME record are to forward all the visitors from different subdomains to their main Internet domain, or to use the webmail service of your hosting company by using webmail.your-doman.com, for example. The latter will work only by setting up a CNAME record for a subdomain simply because this kind of a record created for the main domain renders it impossible to use email addresses.